Bosch CRC200 Installation Instructions For Contractors page 27

Cause or fault description
A61 1005 System configuration not
... confirmed
A68
(A61 = Heating zone 1;
...
A68 = Heating zone 8)
A61 1010 No communication via BUS
... connection EMS
A68
(A61 = Heating zone 1;
...
A68 = Heating zone 8)
A61 1030 Internal data error of the
... 1034 controller.
A68 1035
1036 (A61 = Heating zone 1;
...
A68 = Heating zone 8)
A61 1037 Outdoor temperature sensor
... faulty
A68
(A61 = Heating zone 1;
...
A68 = Heating zone 8)
A61 1038 Invalid time/date
...
A68 (A61 = Heating zone 1;
...
A68 = Heating zone 8)
Table 13 Fault table
CRC200
Testing sequence/Cause
System configuration not completed Configure system completely and confirm
Check whether bus cable was
connected incorrectly
Check whether bus cable is faulty.
Remove expansion module from BUS
and switch controller off and on
again. Check whether the cause of
the fault is a module or module wiring
Controller faulty
Check configuration. The selected
setting requires an outdoor
temperature sensor.
Check the connecting cable between
the controller and outdoor
temperature sensor for continuity
Check the electrical connection of the
connecting cable in the outdoor
temperature sensor or on the plug in
the controller
Check the outdoor temperature
sensor in accordance with table
( Technical documentation for the
heat source)
Check the voltage at the connecting
terminals of the outdoor temperature
sensor in the controller in accordance
with table
Date/time not yet set
Prolonged loss of power supply
Troubleshooting | 27
Measure
Rectify wiring faults and switch controller off
and on again
Repair or replace the bus cable
Replace faulty BUS user
Replace controller
If an outdoor temperature sensor is not
desired. Select the room temperature-
dependent configuration in the controller.
If there is no continuity, rectify the fault
Clean corroded connecting terminals in the
outdoor sensor housing.
If values do not match, replace the sensor
If the sensor values matched, but the voltage
values do not match, replace the controller
Set date/time
Avoid voltage failures
6 720 821 651 (2017/05)